Home / 664,440.37-916,819.56-392,470.52

Finding the Fourth Proportional to 664,440.37, 916,819.56 and 392,470.52

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Solution

The fourth proportional to 664,440.37, 916,819.56 and 392,470.52 is: 541,545.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,440.37 : 916,819.56 = 392,470.52 : x
  2. Step 2: Convert to fraction form
    664,440.37/916,819.56 = 392,470.52/x
  3. Step 3: Cross multiply
    664,440.37x = 916,819.56 × 392,470.52
  4. Step 4: Simplify right side
    664,440.37x = 359,824,644,875.27
  5. Step 5: Solve for x
    x = 359,824,644,875.27/664,440.37
  6. Step 6: Final answer
    x = 541,545.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.